Land planing apparatus



Sept. 17, 1957 w. D. PETERSON 2,806,306

LAND PLANING APPARATUS Original Filed April 10, 1951 3 Sheets-Sheet 1jmnum ,ll m

INVENTOR W.D.-I5ETERSON wi h- 11W ATTORNEY Sept. 17, 1957 w. D. PETERSON2,806,306

LAND PLANING APPARATUS Original Filed April 10, 1951 .3 SheetsSheet 2 w.0. PETERSON BY 17:14am

ATTORNEY INVENTOR Sept. 17, 1957 w. D. PETERSON 2,806,306

LAND PLANING APPARATUS Original Filed April 10, 1951 V 3 Sheets-Sheet I5INVENTOR W. D.PETER SON 1 BY 74mm L ATTORNEY I United States Patent LANDPLANING APPARATUS William Don Peterson, Fillmore, Utah Originalapplication April 10, 1951, Serial No. 220,326. Divided and thisapplication December 22, 1953, Serial No. 399,845

1 Claim. (Cl. 37-153) (Granted under Title 35, U. S. Code (1952), see.266) The invention herein described may be manufactured and used by orfor the Government of the United States of America for governmentalpurposes throughout the world without the payment to me of any royaltythereon.

This invention relates to a land scraper, leveller, or plane. Itparticularly relates to a four wheeled land planing apparatus designedto be easily taken apart for shipment and to be readily reassembled.

An object of this invention is to provide an apparatus of this characterhaving means for controlling the height of the scraper blade from theseat of the pulling tractor.

Another object is to provide a four Wheeled land plane which can readilybe converted into a two wheeled scraper.

One embodiment of the invention is illustrated in the drawing in which:

Figure l is a plan view;

Figure 2 is a rear elevation of Figure 1;

Figure 3 is a side elevation;

Figure 4 is a cross-sectional view of the blade, on line 5-4 of Figure3;

Figure 5 is a view partly in section of the ball and socket trailerhitch to the front Wheel unit;

Figure 6 is a detail view of a modified blade height control means;

Figure 7 is a plan view of another modification;

Figure 8 is a side elevation of Figure 7; and

Figure 9 is a detail of a height adjusting means.

In the drawings is shown a main frame 1 made of pipe or I-beam. Plates 2are welded to frame 1 and bolted to H-beam 3. Beam 3 forms or supportsthe rear axle, for rear wheels 4. Side braces 40 are bolted at the rearends to beam 3, and to frame 1 at their forward ends in the modificationshown in Figure l. Directly above the line of transverse blade 5 is asleeve 6, welded to frame 1. In sleeve 6 is mounted a short pipe length7. Pipe 7 is placed in position in sleeve 6 during the assembly of theapparatus, and is readily removable for disassembly. Pipe 7 forms atruss support for top cable 8. Cable 8 is tightened in position byturnbuckle 9.

Blade 5 is part of a reinforced blade truss unit, shown in cross-sectionin Figure 4. The blade unit is mounted transversely to frame 1, beingrigidly attached thereto by bolts or the like. Transverse blade 5presents a concave curved surface forwardly, and is reinforced by curvedback plate 10 and spacers 11 and .12. Rod 13 is attached at one end tothe center of the blade unit, toward the lower edge, and at the otherend to cable 14. Cable 14 is attached at the forward end of frame 1. Twocables 15 are attached to the rear cross beam 3 and to the edges of theblade unit. The blade is reinforced by two side plates 16 rigidlyattached thereto and a cross beam 17 attached to the side plates. Anarrow top shelf 18, rigidly attached to the blade and bolted to frame1, serves as additional reinforcement. Two bracing cables cables 19 areattached to the side braces 40, at the shelf .13 and cross beam 17, andto frame plates 20 through 2,806,306 Patented Sept. 17, 1957 turnbuckles21. The blade may be weighed by placing sand bags on shelf 18.

Frame 1 is pivotally attached to support arm 22 through hinge bolt 23mounted in plates 20 and hinge sleeve 24 attached to arm 22 (Figures 1and 3). The hinge can be uncoupled for shipping purposes. Arm 22 isarched as shown for strength, and for convenience in the application ofthe control force in the direction required to displace arm 22 angularlywith respect to frame 1. The arching also permits a or more turn of thewheels 34. A bracket 25 is rigidly attached to and extends upwardly fromarm 22. Another bracket 26 is likewise secured to frame 1. When brackets26 and 25 are moved toward each other, frame 1 is lowered together withblade 5. A conventional hydraulic cylinder is indicated at 27,containing a piston 28 and provided with an hydraulic line 29. Pressurein line 29 is controlled from the tractor seat (not shown) by anyconventional means.

A modified control means is shown in Figure 6. The frame 1, support arm22, and hinge 23 are the same as that shown in Figures 1 and 3. Bracket250 is rigidly attached to arm 22. Bracket 260 is likewise attached toframe 1. In the upper ends of the brackets is mounted a rod and nut unit251 to hold the frame 1 and arm 22 in a pre-set position if desired, orto set a limit to the upward movement of arm 22. The control of thismodification is through cable 252 one end of which runs to the driversseat. Cable 252 is wound about pulleys 253 and 254, mounted upon thebrackets. The other end of the cable is attached to bracket 250. Whencable 252 is pulled by the driver the upper ends of brackets 250 and 260are pulley toward each other. This displaces arm 22 clockwise aboutpivot 23 (Figure 6) and frame 1 counterclockwise about pivot 23. Thisraises blade 5.

Arm 22 is attached to cross beam 30 by conventional ball and sockettrailer coupling means 32, 33 attached thereto. Beam 30 provides theaxle for two front wheels 34, and is attached to the tractor (not shown)by link 35. The arm 22 can be disconnected at 3233 and connecteddirectly to the tractor for use as an earth scraper.

In the modification shown in Figure 7 the frame comprises longitudinalmembers 100, rear cross beam 101, and forward cross member 102. Theframe supports transverse blade 105. Demountable pipe sections 107 aremounted upon each beam 100. Reinforcing cables 108 are attached to thebeams at 109 and to the brackets 110. Cables 108 are pulled taut overthe ends or through the ends of pipes 107 by adjusting buckles 109.Supporting arm 122 is similar to arm 22. Arm 122 is displaced angularlytoward frame upon operation of hydraulic cylinder 123. The piston ofthis cylinder is attached to and between brackets .110. The height ofthe blade can be fixed or adjusted by the apparatus shown in detail inFigure 9. A sleeve 124 is mounted on and between the tips of brackets bymeans of pin 130. The sleeve is free to slide along rod 125, thusallowing the blade to be raised by the hydraulic cylinder and releasedback to the position set by stop sleeve 126. Rod 125 is pivotallymounted on 122 at 140. Rod 125 is provided with equidistant holes .127.Stop sleeve 126 is provided with diagonally spaced holes 128. Sleeve 126is fixed in position by pin 129, through the holes. The scraper bladecan therefore be set at any desired depth of cut.

This application is a division of my application Serial No. 220,326,filed April 10, 1951, now abandoned.

I claim:

In a wheeled land planing apparatus comprising a frame having meanstoward one end for mounting traction wheels, an earth-contacting bladesupported by the frame, a wheel unit having a support arm attachedthereto, transverse hinge means for coupling the support arm to theother end of the frame, and adjustable stop means to limit the minimumheight of the earth-contacting bl-ade above the ground, the improvementwhich comprises a first lever bracket rigidly secured to the frameadjacent the hinge, said first lever bracket extending upwardly andforwardly to overhang the support arm of the wheel unit, a second leverbracket rigidly secured to the support arm of the wheel unit, saidsecond lever bracket extending upwardly and rearwardly to overhang theend of the frame adjacent the transverse hinge, said lever bracketscrossing one another at a point intermediate their extremities, pulleymeans rotatably mounted near the upper extremity of each lever bracket,and a cable secured by one of its ends to one of the said lever bracketsand wound in succession around each of the pulleys 4 whereby the heightof the blade above the ground may be adjusted by varying the tension inthe cable, the aforementioned adjustable stop means being connectedbetween the upper extremities of the lever brackets thereby restrictingthe maximum separation of said upper extremities,

References Cited in the file of this patent UNITED STATES PATENTS2,195,015 Schwart Mar. 26, 1940 2,199,023 Brodersen et a1 Apr. 30, 19402,223,829 Le Bleu Dec. 3, 1940 2,502,217 Guibor Mar. 28, 1950 2,597,659McCoy May 20, 1952 2,688,811 Higley Sept. 14, 1954

